From 8fd3fa1fd34ec154719d048496bb51e4fb46bc7f Mon Sep 17 00:00:00 2001
From: Juan David Nicholls Cardona <Juan David Nicholls Cardona>
Date: Sun, 17 Jan 2016 14:33:15 -0500
Subject: [PATCH] Attach base64 files from window.plugins.socialsharing.share
 in Windows platform

---
 src/windows/SocialSharingProxy.js | 82 +++++++++++++++++++++++++------
 1 file changed, 68 insertions(+), 14 deletions(-)

diff --git a/src/windows/SocialSharingProxy.js b/src/windows/SocialSharingProxy.js
index b5b6393d..ff257d52 100644
--- a/src/windows/SocialSharingProxy.js
+++ b/src/windows/SocialSharingProxy.js
@@ -10,6 +10,36 @@ module.exports = {
         var fileOrFileArray = args[2];
         //Web link
         var url = args[3];
+		
+		var folder = Windows.Storage.ApplicationData.current.temporaryFolder;
+
+        var getExtension = function (strBase64) {
+            return strBase64.substring(strBase64.indexOf("/") + 1, strBase64.indexOf(";base64"));
+        };
+
+        var replaceAll = function (str, find, replace) {
+            return str.replace(new RegExp(find, 'g'), replace);
+        };
+
+        var sanitizeFilename = function (name) {
+            return replaceAll(name, "[:\\\\/*?|<> ]", "_");
+        };
+
+        var getFileName = function (position, fileExtension) {
+            var fileName = (subject ? sanitizeFilename(subject) : "file") + (position == 0 ? "" : "_" + position) + "." + fileExtension;
+            return fileName;
+        };
+
+        var createTemporalFile = function (fileName, buffer) {
+
+            var filePath = "";
+            return folder.createFileAsync(fileName, Windows.Storage.CreationCollisionOption.replaceExisting).then(function (file) {
+                filePath = file.path;
+                return Windows.Storage.FileIO.writeBufferAsync(file, buffer);
+            }).then(function(){
+                return Windows.Storage.StorageFile.getFileFromPathAsync(filePath);
+            });
+        };
 
         var doShare = function (e) {
             e.request.data.properties.title = subject?subject: "Sharing";
@@ -19,22 +49,46 @@ module.exports = {
                 var deferral = e.request.getDeferral();
                 var storageItems = [];
                 var filesCount = fileOrFileArray.length;
+				
+                var completeFile = function () {
+                    if (!--filesCount) {
+                        storageItems.length && e.request.data.setStorageItems(storageItems);
+                        deferral.complete();
+                    }
+                };
+
                 for (var i = 0; i < fileOrFileArray.length; i++) {
-                    Windows.Storage.StorageFile.getFileFromPathAsync(fileOrFileArray[i]).done(
-                        function (file) {
-                            storageItems.push(file);
-                            if (!--filesCount) {
-                                e.request.data.setStorageItems(storageItems);
-                                deferral.complete();
-                            }
-                        },
-                        function() {
-                            if (!--filesCount) {
-                                e.request.data.setStorageItems(storageItems);
-                                deferral.complete();
+
+                    var file = fileOrFileArray[i];
+                    if (file.indexOf("data:") >= 0) {                        
+                        var fileName = getFileName(i, getExtension(file));
+                        var buffer = Windows.Security.Cryptography.CryptographicBuffer.decodeFromBase64String(file.split(',')[1]);
+                        if (buffer) {
+                            createTemporalFile(fileName, buffer).done(
+                                function (file) {
+                                    storageItems.push(file);
+                                    completeFile();
+                                },
+                                function () {
+                                    completeFile();
+                                }
+                            );
+                        }
+                        else {
+                            completeFile();
+                        }
+                    }
+                    else {
+                        Windows.Storage.StorageFile.getFileFromPathAsync(file).done(
+                            function (file) {
+                                storageItems.push(file);
+                                completeFile();
+                            },
+                            function () {
+                                completeFile();
                             }
-                       }
-                    );
+                        );
+                    }
                 }
             }
         };